Ixodes ricinus is a hard tick that infests livestock, deer, dogs and a wide variety of other species including humans. This tick has long mouthparts that can make its bites painful and annoying; the bites can also become secondarily infected by bacteria. Feeding by large numbers of ticks may result in anemia. I. ricinus can also transmit a number of pathogens including Babesia divergens (babesiosis), louping ill virus, tick-borne encephalitis virus, Borrelia burgdorferi (Lyme disease) and Anaplasma phagocytophila (tick-borne fever of ruminants, human granulocytic anaplasmosis).
Iowa State University
Iowa State University Center for Food Security and Public Health, "Ixodes ricinus" (2009). Center for Food Security and Public Health Technical Factsheets. 77.